• You might get a modal/negation interaction in slides 2, 4, 7, 10 and 19.

• If you get different modals in these different groups of slides, follow-up elicitation will involve trying to switch the different forms in the relevant sentences.

• If you get the same modals in some or all the sets of slides, or even if you get the same modal in the crucial contrast in slides 18 and 19, it doesn't necessarily mean the language lacks a way to distinguish permission from ability. For example, in English we can used the verb ‘allowed’ or ‘let’ for permission, but we can also just use plain ‘can’. Do follow-up elicitation using other modals in the language, substituting them in various places, to establish the full range of possibilities.